The Siemens SENTRON 3VA2225-8JQ32-0AA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with a full-scale trip setting of 250 A and an initial pickup of 50 A. The 440 kA interrupting capacity at 240 V means it can safely clear a bolted fault at that level without upstream coordination failure; at 415 V it still holds 330 kA, and at 690 V it drops to 52.5 kA, which is still substantial for most industrial services.
Thermal derating — what the 250 A means at panel ambient
At 55 °C it derates to 238 A, at 60 °C to 225 A, and at 70 °C to 200 A. That's a 20% drop at the high end — if your panel ambient runs 65 °C, you're sizing for 213 A continuous, not 250 A.
Ground-fault and communication — what's built in
The communication function is present, but the specific protocol (PROFIBUS, PROFINET, Modbus) is not listed in the basic order code; the 8JQ32 suffix typically indicates a basic electronic trip unit with communication capability, but confirm the interface module separately. The trip indicator is not fitted, so you won't get a local mechanical flag; fault status comes through the communication link or a downstream indicator.
